Because you don't need to. (I am a bitcoin developer, btw.) You can do just fine committing summaries of data (e.g. a Merkle hash root) to the coinbase string in cooperation with a miner, or to a short data field in a provably unspendable output of any transaction. Both of these work fine on vanilla bitcoin, accomplish the typical goals of blockchain data witness, don't require full nodes to store your data, and don't require a new coin.

wrong. data witness?? what is good about that? Someone may want to submit content and generate an income off of the ad revenue from that content. Why should Google collect ad revenue for videos on youtube created by individuals? The person making the movie should get the ad revenue.

Bitcoin can do this?!! HAHA don't make me laugh. Proof of storage was not done academically until after the release of Bitcoin, which is probably why Bitcoin is not designed with mass data storage in mind.

Datacoin is not a currency, it is a crypto anarchist corporation. It is the first publicly traded company not traded on any centralized stock exchange.

Please explain how Bitcoin is a distributed autonomous corporation that pays people to leak/publish information and then generates income via demand for advertisements